Portable power drive



, c. F. BRAINERD ET AL PORTABLE POWER DRIVE Bay 5t. 30.

Filed D60. 11, 1922 1 2 Shggtg-Shggt l WWNESSI. ATTORNEY Sept. 30, 1924.1,510,084

- C- F. BRAINERD ET AL PORTABLE POWER DRIVE Fil ed Dec. 11, 1922 ,2 smu-sh! 2 YIIII/I/II/l/I/ i ml xNvENToRs ATTORNEY WITNESS:

t atented tiept. dd, W241.

1,t1tntttt irnnrioeunn.

ron'raisnn rowan nary-n.

Application filediflecemb'er 11, 1922. Serial l lo. 806,262.

To all whom it may concern: k

Be it known that we, CHARLEs F. BRAIN- nnn and Gnonon H. ToULsoN,citizens of the United States, residing at Endicott, in the county ofBroome and State of New York, have invented new and useful Improvementsin Portable Power Drives, of which the fol lowing is a specification. r

This invention relates to means for threading pipes, bolts and the likeand'for effecting cutting off thereof and has for its object theprovisionof a novel portable power drive which is mounted upon a wheeledtruck whereby it may be readily transported from place to place whereverits use is needed instead of the work being brought to the device, themachine being provided with chuckmeans for holding the work andbeing soarranged that the dies or cutting oft tool may beheld stationary whilethe pipe, rod, bolt or the like is rotated, the advantage being that theoperator will be relieved of the hard work .involved in turning the diesor cutting toolas is necessary in the, ordinary practice, the devicebeing also advantageous for use in making up or assembling pipe sectionsand the like subsequent to their cutting, threading, or other treatment.(l fin important object is the provision of a device of this characterwhich is so constructed that a right hand thread may be cut at one sideof the device and a left hand thread at the other side. Q n I Anotherobject is the provision of a device of this character of such a naturethat any ordinary or standard threading or cutting tools may be used inconnection therewith.

An additional object is the provision of a machine for this purposewhich will be simple and inexpensive in manufacture, highly eficient inuse, durable in service and a general improvement in the art.

With the aboye. and other objects and advantages in view the inventionconsists in the details of construction to be hereinafter more fullydescribed and claimed and illustrated in the accompanying drawings, inwhich:

Figure 1 is a side elevation of the device, Figure 2 is a top plan viewthereof, Figure 3 is a longitudinal section, Figure 4 is a section takenalong the shaft or the driven apparatus and lhe remaining figures aredetail views.

titi

Referring more particularly to the draw ings the numeral 10 designates asuitable supporting frame which is mounted upon a wheeled truck 11 so asto be readily portable.

Mounted-upon one end of this truck is an electric motor 12 of anypreferred type and horse power having its leads 13 connected with asuitable plug 14.- which may be connected in an electric light socketfor securing the proper power. The shattv 15 of the motor extends into aspur gear speed reducing device indicated at 16 from which leads a shaft17 which extends int a casing 18 mountedupon the other end of the frame.Journaled through this casing is a hollow shaft 19 cast integrally witha worm gear 20 provided at both ends with flanges 21 to which aresecured centering chucks 22 whichare for the purpose of holding whatever object 1s to be rotated for the purpose of threading or cutting thesame. llhe shaft '17 carries a worm 23 meshing with the worm wheel 30.if preferred a flexible coupling 24 may be interposed in the shaft 17.

In the. use of the device the pipe, rod. bolt or the like to be threadedis gripped within either desired one oif'lthe chucks 22 while the dietool A is held stationary by the operator at the end of the article.When the motor is then set in operation it is apparent that power willbe applied for rotating the chuck holding the object so that the objectwill be moved with respect to the die tool instead ot vice vers'a as isordinarily' the case. Projecting from opposite sides of the truck frame10 are stops 25 against which-the handle of the die tool will engage soas to relieve the operator of the strain of holding it after threadinghas been started. It is obvious that at one side 95.

of the machine a right hand thread may be cut. and at the opposite sidea left hand I thread may be out.

In order to cut off a pipe, rod, bolt or the like. it is engaged withineither one of the chucks 22 and turned in the same manner while thecutting tool B is engaged upon the object at the proper point. Carriedby the base which supports the casing 18 is a stop 26 against which thecutting tool B very eflicient manner.

I place to place Wherever its use is desired and which will quickly andeasily operate to effect threading or cutting of objects in a Owing tothe strength of the parts and their fewncss it apparent that thcrcislittle to et out of order so that the machine shou d have a ends ofsa1d; hollow shaft, an

Ion? life and satisfactorily perform all'of its unctions.

While we have shown and described the preferred embodiment of theinvention it is ,of course to be understood that we reserve the; rightto'make such changes in the form,

construction and arran ement'ofarts as will not do art from t e spirit 0themvention or t e scope of the subjoined claims. We claim:

- .1. A cflevice of the character described com rising" a wheeled truck,a motor mounted t ereon, a casing having a suitable base mounted u Ijournaled t rough said casing and carryin a worm wheel, a worm mes inwith sai worm wheel carried by a shaft riven from said motor chucksmounted upon opposite stop mom n the'truck, a hollow shaft bers slidablcacross the truck and selectively extensible.

2. A device of the character described comprising a wheeled truck, amotor mounted t ereon, a casing having a base mounted upon the truck, ahollowshaft journaled through said casing and carrying a worm wheel aworm mc'shin with said worm wheel carried by a she t driven from saidmotor, chucks mounted upon 0 positc ends of said hollow shaft, slidab ymounted etc is projecting outwardly from the truck an other slidablymounted stops carried by the base of said casing, either of said stopsbeing extensible into position for en a ment by the handle of a cuttingmoi fir holding the same. stationary.

3. In a device of the character described,

a support, a motor driven shalt mounted thereon and carrying chucks adated to hold an element to be cut, a cuttm tool having a handle, and apair of rods I idable across the support at oppolita sides of the shaft,-either rod being adapted to have either and extended into position forengagement by the handle of the cutting tool whereby to act as a stopfor holding the tool stationary. I

In testimony whereof we aifix our lignatures.

CHARLES F. BRAINERD. GEORGE .H. TOULSON.

